Ubuntu: $ sudo apt-get install multiget
OpenSuSe user can use "1-click" installer to install MultiGet - here
You can start MultiGet in Ubuntu by going to Applications > Internet > MultiGet
Once installed, Multiget monitors your clipboard for download links -- or you can start putting the app to use via its floating drop box. Find something you want to download in your favorite browser, then click and drag a link onto the box to initiate the transfer. Downloads can also be started via Multiget's task menu.